Device for tightening bolting-cloth



(No Model.)

M. HA RMON. Y DEVICE FOR TIGHI'EN'ING BOLTING OLOTH.

Patented Aug. 1, 1882.

N. PUERS. FhnlO-Lithcgnpher. Wnhingion, B4 c.

UNITED STATES PATENT QFFICE.

MILFORD HARMON, OF JACKSON, MICHIGAN.

DEVICE FOR TIGHTENING BOLTING-CLOTH.

SPECIFICATION forming part of Letters Patent No. 262,037, dated August 1, 1882.

Application filed September 19, 1881. (No model.) I

To all whom it may concern:

Be it known that I, MILFORD HARMON, a citizen of the United States of America, residing at Jackson, in the county of Jackson and State of Michigan, have invented certain new and useful Improvements in Devices for Tightening Belting-Cloth; and I do hereby declare the following to be a full, clear,and

exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

Figure 1 is a top or plan view of the shakerframe. Fig. 2 is a vertical section of one of the'sides, (or ends,) taken on line a: as, Fig. 1. Fig. 3 is a section of one of the sides (or ends) in perspective.

A A are the sides; B B, the ends of the frame, firmly united at their corners and having transverse braces a. Each side and end is provided upon its inner face, and about midway between the top and bottom, with a supporting rib or c1eat,b,having a series of slots, (1, for the reception of supporting-bolts, to be hereinafter explained. By preference the upper edge of each of these ribs is beveled to insure that the rniddlings shall readily slide olf upon the bolt-cloth, and is countersunk at the bolt-holes to formsuitable bearings for the thumb-nuts g. The bolt-cloth t is attached at its sides and ends to cloth-bars e, which are suspended from the ribs b by means of bolts f, seated in slots d, and provided with thumbnuts g, by means of whichthe cloth-bars may be clamped tightly to the under surfaces of the ribs.

In order to strain the cloth transversely and also lengthwise, Iemploy tension-bolts h, which pass hdrizontally through the cloth-bars and the side and end bars of the frame, and have thumb-nuts 0, by means of which the tension of the cloth 2' can be regulated at will.

It willof course be understood that the nuts 9 of the supporting-boltsf should be loosened whenever the tension Q of the cloth is to be changed, and that the heads of the tensionbolts h are to be seated in recesses formed for their reception in the outer faces of the sides and ends of the shaker-frame.

What I claim is-- V 1. In a shaker-frame, the combination, with the cloth-bar and a supporting-bolt, of a supporting-rib provided with slots, for the purpose set forth.

2. In a shaker-frame, the combination of the supporting-rib and the cloth-bar having a supporting-bolt passing through it perpendicularly, and an adjusting-bolt passing through it horizontally into the side rail of the shakerframe, for the purpose set forth.

3. In a shaker-frame, the com bination of the side bar, A, rib 1), bolts and nuts f g h 0, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

MILFORD HARM-0N.

Witnesses:

GEO. S. BENNETT, WM. A. KING. 

